Chen Yusheng ^* ye ma zhaofa sun Yusheng Chen Weili Yang

• Ocean University of China, Qingdao, China

In order to explore how to promote China's deep sea aquaculture model under the joint action of the market mechanism and the government, this study firstly constructs a two-party evolutionary game model of "enterprise-service organisation" based on the theories of information asymmetry and finite rationality, and then finds that in the absence of the government's participation, the enterprises and service organisations cannot fully participate in the game. Through the stability analysis of the model, it is found that in the absence of government participation, the enterprises and service providers cannot achieve full participation. On the basis of the two-party evolutionary game model, this study constructs a three-party evolutionary game model of "enterprise-service organisation-government", and finds that the active participation of enterprises and service organisations can be achieved under the guidance and intervention of the government. At the same time, this study also finds that government intervention cannot be implemented all the time due to the cost, and that the role of the government is to play a guiding and supervisory role in the early stage. Through simulation analysis, this study finds that initial willingness to participate, risk cost, and benefit and cost sharing mechanism are the key factors for the promotion and application of deep-sea aquaculture model in China, and government subsidy and supervision are equally important, but the focus should be on cost control. Based on the above findings, this study proposes policy recommendations to facilitate the promotion of deep-sea aquaculture model.